shared.c (view raw)
1/* shared.c: global vars + some callback functions
2 *
3 * Copyright (C) 2006 Lars Hjemli
4 *
5 * Licensed under GNU General Public License v2
6 * (see COPYING for full license text)
7 */
8
9#include "cgit.h"
10
11struct repolist cgit_repolist;
12struct repoinfo *cgit_repo;
13
14char *cgit_root_title = "Git repository browser";
15char *cgit_css = "/cgit.css";
16char *cgit_logo = "/git-logo.png";
17char *cgit_logo_link = "http://www.kernel.org/pub/software/scm/git/docs/";
18char *cgit_module_link = "./?repo=%s&page=commit&id=%s";
19char *cgit_virtual_root = NULL;
20char *cgit_script_name = CGIT_SCRIPT_NAME;
21char *cgit_cache_root = "/var/cache/cgit";
22char *cgit_repo_group = NULL;
23
24int cgit_nocache = 0;
25int cgit_snapshots = 0;
26int cgit_enable_log_filecount = 0;
27int cgit_enable_log_linecount = 0;
28int cgit_max_lock_attempts = 5;
29int cgit_cache_root_ttl = 5;
30int cgit_cache_repo_ttl = 5;
31int cgit_cache_dynamic_ttl = 5;
32int cgit_cache_static_ttl = -1;
33int cgit_cache_max_create_time = 5;
34
35int cgit_max_msg_len = 60;
36int cgit_max_repodesc_len = 60;
37int cgit_max_commit_count = 50;
38
39int cgit_query_has_symref = 0;
40int cgit_query_has_sha1 = 0;
41
42char *cgit_querystring = NULL;
43char *cgit_query_repo = NULL;
44char *cgit_query_page = NULL;
45char *cgit_query_head = NULL;
46char *cgit_query_search = NULL;
47char *cgit_query_sha1 = NULL;
48char *cgit_query_sha2 = NULL;
49char *cgit_query_path = NULL;
50char *cgit_query_name = NULL;
51int cgit_query_ofs = 0;
52
53int htmlfd = 0;
54
55int chk_zero(int result, char *msg)
56{
57 if (result != 0)
58 die("%s: %s", msg, strerror(errno));
59 return result;
60}
61
62int chk_positive(int result, char *msg)
63{
64 if (result <= 0)
65 die("%s: %s", msg, strerror(errno));
66 return result;
67}
68
69struct repoinfo *add_repo(const char *url)
70{
71 struct repoinfo *ret;
72
73 if (++cgit_repolist.count > cgit_repolist.length) {
74 if (cgit_repolist.length == 0)
75 cgit_repolist.length = 8;
76 else
77 cgit_repolist.length *= 2;
78 cgit_repolist.repos = xrealloc(cgit_repolist.repos,
79 cgit_repolist.length *
80 sizeof(struct repoinfo));
81 }
82
83 ret = &cgit_repolist.repos[cgit_repolist.count-1];
84 ret->url = xstrdup(url);
85 ret->name = ret->url;
86 ret->path = NULL;
87 ret->desc = NULL;
88 ret->owner = NULL;
89 ret->group = cgit_repo_group;
90 ret->defbranch = "master";
91 ret->snapshots = cgit_snapshots;
92 ret->enable_log_filecount = cgit_enable_log_filecount;
93 ret->enable_log_linecount = cgit_enable_log_linecount;
94 ret->module_link = cgit_module_link;
95 return ret;
96}
97
98void cgit_global_config_cb(const char *name, const char *value)
99{
100 if (!strcmp(name, "root-title"))
101 cgit_root_title = xstrdup(value);
102 else if (!strcmp(name, "css"))
103 cgit_css = xstrdup(value);
104 else if (!strcmp(name, "logo"))
105 cgit_logo = xstrdup(value);
106 else if (!strcmp(name, "logo-link"))
107 cgit_logo_link = xstrdup(value);
108 else if (!strcmp(name, "module-link"))
109 cgit_module_link = xstrdup(value);
110 else if (!strcmp(name, "virtual-root"))
111 cgit_virtual_root = xstrdup(value);
112 else if (!strcmp(name, "nocache"))
113 cgit_nocache = atoi(value);
114 else if (!strcmp(name, "snapshots"))
115 cgit_snapshots = atoi(value);
116 else if (!strcmp(name, "enable-log-filecount"))
117 cgit_enable_log_filecount = atoi(value);
118 else if (!strcmp(name, "enable-log-linecount"))
119 cgit_enable_log_linecount = atoi(value);
120 else if (!strcmp(name, "cache-root"))
121 cgit_cache_root = xstrdup(value);
122 else if (!strcmp(name, "cache-root-ttl"))
123 cgit_cache_root_ttl = atoi(value);
124 else if (!strcmp(name, "cache-repo-ttl"))
125 cgit_cache_repo_ttl = atoi(value);
126 else if (!strcmp(name, "cache-static-ttl"))
127 cgit_cache_static_ttl = atoi(value);
128 else if (!strcmp(name, "cache-dynamic-ttl"))
129 cgit_cache_dynamic_ttl = atoi(value);
130 else if (!strcmp(name, "max-message-length"))
131 cgit_max_msg_len = atoi(value);
132 else if (!strcmp(name, "max-repodesc-length"))
133 cgit_max_repodesc_len = atoi(value);
134 else if (!strcmp(name, "max-commit-count"))
135 cgit_max_commit_count = atoi(value);
136 else if (!strcmp(name, "repo.group"))
137 cgit_repo_group = xstrdup(value);
138 else if (!strcmp(name, "repo.url"))
139 cgit_repo = add_repo(value);
140 else if (!strcmp(name, "repo.name"))
141 cgit_repo->name = xstrdup(value);
142 else if (cgit_repo && !strcmp(name, "repo.path"))
143 cgit_repo->path = xstrdup(value);
144 else if (cgit_repo && !strcmp(name, "repo.desc"))
145 cgit_repo->desc = xstrdup(value);
146 else if (cgit_repo && !strcmp(name, "repo.owner"))
147 cgit_repo->owner = xstrdup(value);
148 else if (cgit_repo && !strcmp(name, "repo.defbranch"))
149 cgit_repo->defbranch = xstrdup(value);
150 else if (cgit_repo && !strcmp(name, "repo.snapshots"))
151 cgit_repo->snapshots = cgit_snapshots * atoi(value);
152 else if (cgit_repo && !strcmp(name, "repo.enable-log-filecount"))
153 cgit_repo->enable_log_filecount = cgit_enable_log_filecount * atoi(value);
154 else if (cgit_repo && !strcmp(name, "repo.enable-log-linecount"))
155 cgit_repo->enable_log_linecount = cgit_enable_log_linecount * atoi(value);
156 else if (cgit_repo && !strcmp(name, "repo.module-link"))
157 cgit_repo->module_link= xstrdup(value);
158 else if (!strcmp(name, "include"))
159 cgit_read_config(value, cgit_global_config_cb);
160}
161
162void cgit_querystring_cb(const char *name, const char *value)
163{
164 if (!strcmp(name,"r")) {
165 cgit_query_repo = xstrdup(value);
166 } else if (!strcmp(name, "p")) {
167 cgit_query_page = xstrdup(value);
168 } else if (!strcmp(name, "q")) {
169 cgit_query_search = xstrdup(value);
170 } else if (!strcmp(name, "h")) {
171 cgit_query_head = xstrdup(value);
172 cgit_query_has_symref = 1;
173 } else if (!strcmp(name, "id")) {
174 cgit_query_sha1 = xstrdup(value);
175 cgit_query_has_sha1 = 1;
176 } else if (!strcmp(name, "id2")) {
177 cgit_query_sha2 = xstrdup(value);
178 cgit_query_has_sha1 = 1;
179 } else if (!strcmp(name, "ofs")) {
180 cgit_query_ofs = atoi(value);
181 } else if (!strcmp(name, "path")) {
182 cgit_query_path = xstrdup(value);
183 } else if (!strcmp(name, "name")) {
184 cgit_query_name = xstrdup(value);
185 }
186}
187
188void *cgit_free_commitinfo(struct commitinfo *info)
189{
190 free(info->author);
191 free(info->author_email);
192 free(info->committer);
193 free(info->committer_email);
194 free(info->subject);
195 free(info);
196 return NULL;
197}
198
199int hextoint(char c)
200{
201 if (c >= 'a' && c <= 'f')
202 return 10 + c - 'a';
203 else if (c >= 'A' && c <= 'F')
204 return 10 + c - 'A';
205 else if (c >= '0' && c <= '9')
206 return c - '0';
207 else
208 return -1;
209}
210
211void cgit_diff_tree_cb(struct diff_queue_struct *q,
212 struct diff_options *options, void *data)
213{
214 int i;
215
216 for (i = 0; i < q->nr; i++) {
217 if (q->queue[i]->status == 'U')
218 continue;
219 ((filepair_fn)data)(q->queue[i]);
220 }
221}
222
223static int load_mmfile(mmfile_t *file, const unsigned char *sha1)
224{
225 enum object_type type;
226
227 if (is_null_sha1(sha1)) {
228 file->ptr = (char *)"";
229 file->size = 0;
230 } else {
231 file->ptr = read_sha1_file(sha1, &type, &file->size);
232 }
233 return 1;
234}
235
236/*
237 * Receive diff-buffers from xdiff and concatenate them as
238 * needed across multiple callbacks.
239 *
240 * This is basically a copy of xdiff-interface.c/xdiff_outf(),
241 * ripped from git and modified to use globals instead of
242 * a special callback-struct.
243 */
244char *diffbuf = NULL;
245int buflen = 0;
246
247int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
248{
249 int i;
250
251 for (i = 0; i < nbuf; i++) {
252 if (mb[i].ptr[mb[i].size-1] != '\n') {
253 /* Incomplete line */
254 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
255 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
256 buflen += mb[i].size;
257 continue;
258 }
259
260 /* we have a complete line */
261 if (!diffbuf) {
262 ((linediff_fn)priv)(mb[i].ptr, mb[i].size);
263 continue;
264 }
265 diffbuf = xrealloc(diffbuf, buflen + mb[i].size);
266 memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size);
267 ((linediff_fn)priv)(diffbuf, buflen + mb[i].size);
268 free(diffbuf);
269 diffbuf = NULL;
270 buflen = 0;
271 }
272 if (diffbuf) {
273 ((linediff_fn)priv)(diffbuf, buflen);
274 free(diffbuf);
275 diffbuf = NULL;
276 buflen = 0;
277 }
278 return 0;
279}
280
281int cgit_diff_files(const unsigned char *old_sha1,
282 const unsigned char *new_sha1,
283 linediff_fn fn)
284{
285 mmfile_t file1, file2;
286 xpparam_t diff_params;
287 xdemitconf_t emit_params;
288 xdemitcb_t emit_cb;
289
290 if (!load_mmfile(&file1, old_sha1) || !load_mmfile(&file2, new_sha1))
291 return 1;
292
293 diff_params.flags = XDF_NEED_MINIMAL;
294 emit_params.ctxlen = 3;
295 emit_params.flags = XDL_EMIT_FUNCNAMES;
296 emit_cb.outf = filediff_cb;
297 emit_cb.priv = fn;
298 xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb);
299 return 0;
300}
301
302void cgit_diff_tree(const unsigned char *old_sha1,
303 const unsigned char *new_sha1,
304 filepair_fn fn)
305{
306 struct diff_options opt;
307 int ret;
308
309 diff_setup(&opt);
310 opt.output_format = DIFF_FORMAT_CALLBACK;
311 opt.detect_rename = 1;
312 opt.recursive = 1;
313 opt.format_callback = cgit_diff_tree_cb;
314 opt.format_callback_data = fn;
315 diff_setup_done(&opt);
316
317 if (old_sha1)
318 ret = diff_tree_sha1(old_sha1, new_sha1, "", &opt);
319 else
320 ret = diff_root_tree_sha1(new_sha1, "", &opt);
321 diffcore_std(&opt);
322 diff_flush(&opt);
323}
324
325void cgit_diff_commit(struct commit *commit, filepair_fn fn)
326{
327 unsigned char *old_sha1 = NULL;
328
329 if (commit->parents)
330 old_sha1 = commit->parents->item->object.sha1;
331 cgit_diff_tree(old_sha1, commit->object.sha1, fn);
332}